Thank you Diamondjim,
I am novice in autocad and lisp programming, but this is a chance for increase my competence, if nothing can convert spline into arcs, your help is the best!
Thank you,
rKeyTek and diamondjim,
but my problem is more general problem. I have files with hundred of splines, i need a software or method that automatically approx. spline into multiple arcs (probably a CAM software i think)and where i can set approximation and save the result in dxf with...